|
|||||
|
|
| 1961年至2008年新疆北疆地区积雪的时空演变特征 | |
| 引用本文： | 刘艳,阮惠华,张云惠,李杨.1961年至2008年新疆北疆地区积雪的时空演变特征[J].资源科学,2012,34(4):629-635. |
| 作者姓名： | 刘艳 阮惠华 张云惠 李杨 |
| 作者单位： | 1. 中国气象局鸟鲁木齐沙漠气象研究所,乌鲁木齐,830002 2. 广东省气象信息中心,广州,510080 3. 新疆气象台,乌鲁木齐,830002 |
| 基金项目： | 国家科技部公益性行业(气象)科研专项(编号:GYHY201106007);半干旱气候变化教育部重点实验室开放基金项目:"西北地区气候变化数据的时空统计分析研究";沙漠气象科学研究基金项目(编号:SQJ2009006). |
| 摘 要： | 利用新疆北疆地区51个地面站1961年-2008年逐日积雪深度资料,重点分析了年和冬季最大雪深及其均值和24h≥10cm积雪日数均值和最大值的空间分布和周期特征。结果显示：①北疆地区最大雪深和≥10cm积雪日数空间分布局地差异显著,多雪区具有沿山脉分布的空间特征,集中在北部阿勒泰和富蕴、青河一带、中天山博格达峰、塔城盆地和西天山伊犁河谷;②多雪区内,24h≥10cm年均和年最大日数分别为20～25d和65～75d;③多雪区内,最大雪深的周期特征显著,同属暖区降雪的阿勒泰地区和塔城盆地最大雪深具有7a左右和11a左右的第一和第二主周期。属冷锋降雪的伊犁河谷具有11a左右和7a左右的振荡周期;④塔城盆地和阿勒泰地区的第一、第二周期一致,而伊犁河谷周期分布与之相反,这主要与气候背景、环流形势及影响系统不同有关,其次是与地理位置、地形有关。 |
| 关 键 词： | 北疆地区 最大雪深 积雪日数 空间分布 周期特征 |
Spatio-Temporal Characteristics of the Snow Cover Ecllution in the Northern Region of Xinjiang over the Period of 1961 - 2008 |
|
| LIU Yan,RUAN Huihu,ZHANG Yunhui and LI Yang.Spatio-Temporal Characteristics of the Snow Cover Ecllution in the Northern Region of Xinjiang over the Period of 1961 - 2008[J].Resources Science,2012,34(4):629-635. | |
| Authors: | LIU Yan RUAN Huihu ZHANG Yunhui and LI Yang |
| Institution: | Institute of Desert and Meteorology, China Meteorological Administration, Urumqi 830002, China;Guangdong Meteorological Information Center, Guangzhou 510080, China;Xinjiang Meteorological Observatory, Urumqi 830002, China;Institute of Desert and Meteorology, China Meteorological Administration, Urumqi 830002, China |
| Abstract: | Snow is an important water resource in Xinjiang. This paper focuses on the spatio-temporal evolution analysis of snow in the northern region of Xinjiang. With the daily snow depth data from 51 meteorological stations in the northern region of Xinjiang over the period of 1961-2008, we have mainly analyzed the spatial distribution and periodic characteristics of mean and annual maximum snow depth and the number of days with daily snowfall greater than 10 cm from November to March. The results show that: 1) The spatial distribution of the maximum snow depth and the number of days with daily snowfall greater than 10 cm show significant differences among different regions. In geography, heavy snow areas are mostly distributed along the mountain range, such as the area of north AleTai, FuYun and QingHe, Bogda-peak in medium Tianshan Mountain, Tacheng basin and Yili river valley in the west Tianshan Mountain; 2) The annual mean and annual maximum days with daily snowfall greater than 10 cm in heavy snow areas are 20-25 days and 65-75 days respectively; 3) Wavelet transform results show that the annual maximum snow depth in heavy snow areas has distinct periodic characteristics. In particular, there exists the first period of 7a and the second period of 11a in Aletai and Tacheng basin, which belong to the same warm area. The Yili river valley, which belongs to the cold front area, has vibration periods of 11 and 7 years or so; 4) The first and second periods in Tacheng basin are similar to those in Aletai region, but Yili river valley has the reverse periods. This is largely caused by climate background, circulation situation and the influence system. Also, it is somewhat related to geography position and the topography. At last, we get the maximum hit value range of snow depth through a comparative analysis of the northern snow-prone areas and the maximum spatial extent of snow depth in the study area during the last decade. All these analysis results will be collected in a database for building an early warning indicator system of snow in the Northern Region of Xinjiang. |
| Keywords: | Northern Xinjiang Maximum snow depth A number of snow days Spatial distribution Periodic characteristics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《资源科学》浏览原始摘要信息 | |
| 点击此处可从《资源科学》下载免费的PDF全文 | |